The Kama (KA-mə, KAH-mə; Russian: Кама Udmurt: Кам), also known as the Chulman (chool-MAHN; Tatar: Чулман / Çulman), is a 1,805-kilometre (1,122 mi) long river in Russia. It has a drainage basin of 507,000 square kilometres (196,000 sq mi). It is the longest left tributary of the Volga and the largest one in discharge. At their confluence, in fact, the Kama is even larger in terms of discharge than the Volga.